I have the same problem with my DD.
Personally, I could never take the route of "announcing" as Parents that we are going to do "it"; and then carrying on.
I find it very distasteful and abhorent.
Sex isn't a "family thing".
It's personal; only between the parties involved.
It shouldn't be shared.
I consider sex to be something that I alone share; with my DH.
Broadcasting the fact that you are going to have sex to "whomesoever"; no matter the need for privacy, diminishes the very privacy that One is trying to protect.
And it is uneccessary.
I should explain. As a teenager, I heard my Father/Mother having sex . My Father was an alcoholic. He returned one evening pissed.I heard my Mother "pleading"; during this sex episode.
To this day, I do not know if it was consensual sex.
At the time, as a 13 year old; hearing them during this sex, I thought he was forcing her/raping her.
I remember hearing it; being sickened, revolted; wishing that I could just block it out and not hear anymore.
I was so scared of hearing it again that I had the TV on all night or music/head 'phones. I'm 48 years old, but I still cannot sleep without the tv on.
My Dh and I have good sex when we can manage it.
I'd hate my 11yr old hearing it.
I plead for Him to stop; I pant, I shriek, I beg, I occasionally howl.
All of which would be extremely difficult for any child to interpret if they're not party to One's sex life and sexually active themselves; ...and just overheard.
We have a 25 year old sexual realationship. It's not particularly kinky, it's not particularly dirty. But it is neccesarily somewhat evolved.
Subjective. If my DD heard it; she could imagine that I was in Danger/being Harmed.
My view is that children should never be incorporated/integrated/accomodated for your sex life.
We don't have sex when there is any danger of DD hearing.
As DD doesn't sleep much, we don't have sex much. Sometimes we have sex in the garden.
I don't think that's a solution; because of the slugs.